Journal of Food, Agriculture and Environment

Model setting the micromineral supplementation values in heavy breed avian youth raised in organic system

Author(s):

Dan Drinceanu, Lavinia Ştef, Eliza Simiz, Călin Julean*, Ioan Luca, Florica Mic

Recieved Date: 2010-08-09, Accepted Date: 2010-10-30

Abstract:

In the biological breeding of heavy-breed chicken, the nutritionist’s intervention is necessary in order to balance food in terms of its components. To elaborate a model setting the micromineral supplementation values in heavy breed avian youth raised in organic systems, we relied on a productive experiment carried out on three groups, whose feed was supplemented with a mineral premix including macroelement sources only, in G1, a premix providing 10 ppm Fe, 10.59 ppm Mn, 8.06 ppm Zn, 1.59 ppm Cu, 0.11 ppm Co, 0.08 ppm I in G2, and double-dose microelements in G3. The best bioproductive results were achieved successive to feed supplementation with 20 ppm Fe, 21 ppm Mn, 15 ppm Zn, 3.2 ppm Cu, 0.23 mg Co, 0.17 ppm I and 0.10 ppm Se, by increasing ingestion with up to 13%, by increasing body weight significantly (p<0.05), and by decreasing feed conversion ratio with 3-5%, compared with the groups supplemented with half doses or with no microelement-based supplementation. The productive data, mathematically processed with the help of the statistical software Data Fit version 9, allowed us extract the 10^th degree polynomial equation with high coefficient of multiple determination, because the error between the predicted values and the experimental ones was below 0.0032% for all microelements studied. The 10^th order polynomial equation, which had the highest coefficient of multiple determination for all the seven microelements studied, is: Y=a*x¹⁰+b*x⁹+c*x⁸+d*x⁷+e*x⁶+f*x⁵+g*x⁴+h*x³+i*x²+j*x+k. The data achieved in relationship with the micromineral supplementation may be applied in the determination of mineral premix structures specific to heavy breed avian youth raised for meat production in organic systems.

Keywords:

Microelements, avian youth, mathematical model

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Journal: Journal of Food, Agriculture and Environment
Year: 2010
Volume: 8
Issue: 3&4
Category: Agriculture
Pages: 430-433

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